Install packages using npm

index.js

var npm = require('npm');

function npm_ready (err) {
	if (err) {
		console.log(err);
	}

	console.log('Searching...');
	npm.commands.search(['wa-source-'], false, function (err, data) {
		console.log('Search done.');

		if (err) {
			console.log(err);
		}

		console.log('Installing...');
		npm.commands.install(__dirname + '/test', Object.keys(data), function (e, data) {
			console.log('Install done.');
			console.log('Error:');
			console.log(e);

			console.log('Data:');
			console.log(data);
		});
	});
}

npm.load(npm_ready);